must twinkle
Verbo regular: twinkle - twinkled- twinkled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must twinkle
you must twinkle
he must twinkle
we must twinkle
you must twinkle
they must twinkle 	I must be twinkling
you must be twinkling
he must be twinkling
we must be twinkling
you must be twinkling
they must be twinkling	I must have twinkled
you must have twinkled
he must have twinkled
we must have twinkled
you must have twinkled
they must have twinkled	I must have been twinkling
you must have been twinkling
he must have been twinkling
we must have been twinkling
you must have been twinkling
they must have been twinkling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't twinkle
you mustn't twinkle
he mustn't twinkle
we mustn't twinkle
you mustn't twinkle
they mustn't twinkle 	I mustn't be twinkling
you mustn't be twinkling
he mustn't be twinkling
we mustn't be twinkling
you mustn't be twinkling
they mustn't be twinkling	I mustn't have twinkled
you mustn't have twinkled
he mustn't have twinkled
we mustn't have twinkled
you mustn't have twinkled
they mustn't have twinkled	I mustn't have been twinkling
you mustn't have been twinkling
he mustn't have been twinkling
we mustn't have been twinkling
you mustn't have been twinkling
they mustn't have been twinkling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I twinkle?
must you twinkle?
must he twinkle?
must we twinkle?
must you twinkle?
must they twinkle? 	must I be twinkling?
must you be twinkling?
must he be twinkling?
must we be twinkling?
must you be twinkling?
must they be twinkling? 	must I have twinkled?
must you have twinkled?
must he have twinkled?
must we have twinkled?
must you have twinkled?
must they have twinkled? 	must I have been twinkling?
must you have been twinkling?
must he have been twinkling?
must we have been twinkling?
must you have been twinkling?
must they have been twinkling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I twinkle?
mustn't you twinkle?
mustn't he twinkle?
mustn't we twinkle?
mustn't you twinkle?
mustn't they twinkle? 	mustn't I be twinkling?
mustn't you be twinkling?
mustn't he be twinkling?
mustn't we be twinkling?
mustn't you be twinkling?
mustn't they be twinkling? 	mustn't I have twinkled?
mustn't you have twinkled?
mustn't he have twinkled?
mustn't we have twinkled?
mustn't you have twinkled?
mustn't they have twinkled? 	mustn't I have been twinkling?
mustn't you have been twinkling?
mustn't he have been twinkling?
mustn't we have been twinkling?
mustn't you have been twinkling?
mustn't they have been twinkling?